Just to clarify any confusion that some people may have, it is the fact that BA were interpreting the EASA rules to say you had to be acclimatized to your home base at report for your next duty. If you had been on holiday on the West coast or down in Oz say, you would need potentially 5 nights at base to acclimatize. That would have to come off your holiday time. In addition, due to the vagaries of staff travel, even when confirmed, you couldn’t cut it too fine, and would have to allow a day or so leeway. That could mean, a 2 week holiday actually only being 1 week away.
Thankfully, someone in BA saw sense and there’s was a shift in interpretation to you only have to be able to legally operate your next duty after your holiday in a non acclimatized state.